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MIT Passive Desalination system could produce freshwater that is cheaper than tap water, scales down to the size of a suitcase. (news.mit.edu)

submitted 10 months ago* (last edited 10 months ago) by [email protected] to c/[email protected]

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According to MIT, this technology works even at small scale, with one the size of a suitcase able to desalinate 6 litres per hour, and only needing to be serviced every few years.

Here's a video detailing how it works.

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[–] [email protected] 3 points 10 months ago (5 children)

What will happen to the salt?

[–] [email protected] 16 points 10 months ago* (last edited 10 months ago) (1 children)

Because the device is tilted, saltier water flows out of the device and back into the main salt water reservoir due to having more mass than the less salty water. As long as the main reservoir was regularly flushed with new salt water, it would never become dangerously concentrated to marine life, which is a major advantage.

[–] [email protected] 2 points 10 months ago

If scalable… nifty

[–] [email protected] 2 points 10 months ago

Sea salt is also a possible source of lithium, so you could possibly mine and filter it for various resources.

[–] Potatisen 2 points 10 months ago

Eat it

[–] [email protected] 2 points 10 months ago

If you can get it dry enough, there are huge underground salt mines that could be back filled.

But an larger ocean usually has enough currents that it dillutes out well enough to not be a major issue.

[–] [email protected] 0 points 10 months ago

It's shot in to space!